A series of Mozilla bug updates indicate that cryptomining and fingerprint blocking will soon be included as part of Firefox’s Content Blocking feature.
With the initial release, Mozilla will add the ability to block cryptomining and fingerprinting to the Custom settings of the Content Blocking feature as shown below.
Eventually, Mozilla plans on moving the cryptomining and fingerprinting options out of Custom and into Strict and finally Standard. Once in standard, they will be automatically blocked for all users of Firefox.
Currently, it is not known when these features will go live in Firefox, but at least part of it has begun to be seen in a Firefox 66.0a1 build as shown by a recent source code revision.